001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.activemq.transport.stomp;
018
019 import java.io.IOException;
020 import java.security.cert.X509Certificate;
021
022 import javax.jms.JMSException;
023
024 import org.apache.activemq.broker.BrokerContext;
025 import org.apache.activemq.command.Command;
026 import org.apache.activemq.transport.Transport;
027 import org.apache.activemq.transport.TransportFilter;
028 import org.apache.activemq.transport.TransportListener;
029 import org.apache.activemq.transport.tcp.SslTransport;
030 import org.apache.activemq.util.IOExceptionSupport;
031 import org.apache.activemq.wireformat.WireFormat;
032 import org.slf4j.Logger;
033 import org.slf4j.LoggerFactory;
034
035 /**
036 * The StompTransportFilter normally sits on top of a TcpTransport that has been
037 * configured with the StompWireFormat and is used to convert STOMP commands to
038 * ActiveMQ commands. All of the conversion work is done by delegating to the
039 * ProtocolConverter.
040 *
041 * @author <a href="http://hiramchirino.com">chirino</a>
042 */
043 public class StompTransportFilter extends TransportFilter implements StompTransport {
044 private static final Logger LOG = LoggerFactory.getLogger(StompTransportFilter.class);
045 private static final Logger TRACE = LoggerFactory.getLogger(StompTransportFilter.class.getPackage().getName() + ".StompIO");
046 private final ProtocolConverter protocolConverter;
047 private StompInactivityMonitor monitor;
048 private StompWireFormat wireFormat;
049
050 private boolean trace;
051
052 public StompTransportFilter(Transport next, WireFormat wireFormat, BrokerContext brokerContext) {
053 super(next);
054 this.protocolConverter = new ProtocolConverter(this, brokerContext);
055
056 if (wireFormat instanceof StompWireFormat) {
057 this.wireFormat = (StompWireFormat) wireFormat;
058 }
059 }
060
061 public void oneway(Object o) throws IOException {
062 try {
063 final Command command = (Command) o;
064 protocolConverter.onActiveMQCommand(command);
065 } catch (JMSException e) {
066 throw IOExceptionSupport.create(e);
067 }
068 }
069
070 public void onCommand(Object command) {
071 try {
072 if (trace) {
073 TRACE.trace("Received: \n" + command);
074 }
075
076 protocolConverter.onStompCommand((StompFrame) command);
077 } catch (IOException e) {
078 onException(e);
079 } catch (JMSException e) {
080 onException(IOExceptionSupport.create(e));
081 }
082 }
083
084 public void sendToActiveMQ(Command command) {
085 TransportListener l = transportListener;
086 if (l != null) {
087 l.onCommand(command);
088 }
089 }
090
091 public void sendToStomp(StompFrame command) throws IOException {
092 if (trace) {
093 TRACE.trace("Sending: \n" + command);
094 }
095 Transport n = next;
096 if (n != null) {
097 n.oneway(command);
098 }
099 }
100
101 public X509Certificate[] getPeerCertificates() {
102 if (next instanceof SslTransport) {
103 X509Certificate[] peerCerts = ((SslTransport) next).getPeerCertificates();
104 if (trace && peerCerts != null) {
105 LOG.debug("Peer Identity has been verified\n");
106 }
107 return peerCerts;
108 }
109 return null;
110 }
111
112 public boolean isTrace() {
113 return trace;
114 }
115
116 public void setTrace(boolean trace) {
117 this.trace = trace;
118 }
119
120 @Override
121 public StompInactivityMonitor getInactivityMonitor() {
122 return monitor;
123 }
124
125 public void setInactivityMonitor(StompInactivityMonitor monitor) {
126 this.monitor = monitor;
127 }
128
129 @Override
130 public StompWireFormat getWireFormat() {
131 return this.wireFormat;
132 }
133
134 public String getDefaultHeartBeat() {
135 return protocolConverter != null ? protocolConverter.getDefaultHeartBeat() : null;
136 }
137
138 public void setDefaultHeartBeat(String defaultHeartBeat) {
139 protocolConverter.setDefaultHeartBeat(defaultHeartBeat);
140 }
141
142 }